The E10M20-T1 is a PCIe adapter card that adds SSD cache/storage and faster networking to select Synology NAS models in a single PCIe slot. It carries two M.2 slots for Synology SNV3000-series NVMe SSDs (2280 or 22110 form factors) for a PCIe SSD cache, plus a 10Gb Ethernet port that also runs at 5, 2.5 or 1 Gb/s and 100 Mb/s. The card uses a PCIe 3.0 x8 host bus interface and a low-profile/full-height form factor.